Sunsong 3603748 Power Steering Return Line Hose Assembly - From Gear

Power Steering Return Hose for Kia Rio

Sunsong 3603748 is a power steering return line hose assembly built for low-pressure, high-temperature return flow. It is engineered for the 2002-2003 Kia Rio from gear applications and uses corrosion-resistant steel tubing with a zinc coating for added protection against humidity, road salt, water, and grime.

Key Features

• Fits 2003 Kia Rio, from gear, to 3/31
• Fits 2002 Kia Rio, from gear, for vehicles manufactured from July 1st
• Max working pressure of 250 psi for return-side steering service
• High-grade steel tubing with electroplated zinc finish
• Precision-engineered for exact fit and original-condition restoration
• Includes required brackets, grommets, heat shields, bushings, and protective sleeves as specified for the application
• End 1: 16 mm male O-ring
• End 2: 1/2 in beaded tube
• Overall length: 22.4 in (570 mm)

Detailed Description

This Sunsong power steering return line hose assembly, part number 3603748, is made for Kia Rio steering systems that route fluid from the gear on the return side. The hose is built to handle low-pressure, high-temperature operation and is formed to exact fit dimensions for the listed 2002-2003 Kia Rio applications. Sunsong 3603748 also uses steel tubing with zinc plating to help resist rust and corrosion in harsh underbody conditions.

This part cross-references Kia OE number 57770FD090 for the same application.

Common Steering Problems It May Address

• Power steering fluid seepage at the return line
• Corrosion or rust on the original hose assembly
• Cracked, hardened, or deteriorated hose material
• Improper routing or fit after previous repairs
• Noise or steering performance issues caused by fluid loss

Installation Notes and Tips

Confirm the vehicle build date before ordering: this hose fits 2003 Kia Rio from gear through 3/31 and 2002 Kia Rio from gear for vehicles manufactured from July 1st. Match the end fittings, hose length, and routing points to the original assembly before installation. Inspect surrounding brackets, seals, and steering components for wear so the replacement restores the system to proper condition.

Quality Assurance

Sunsong manufactures this return hose assembly to exceed original equipment performance standards for return-side steering service. The steel construction, zinc coating, and application-specific engineering support long-term durability in demanding underhood and undercar conditions.